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AI Text Summarizer vs ChatPDF

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Both have a free tier. Only ChatPDF ships a public API.

AI Text SummarizerNo-signup summarizer for pasted text or uploaded documents up to 30 MB, with follow-up questionsChatPDFAsk questions about PDFs, documents and videos

Side by side

FactAI Text SummarizerChatPDF
CategorySummarizationPDF Tools
Pricing modelFreeFreemium
Public APINoYes
PlatformsWebWeb, macOS, API
CompanyLTS Inc.ChatPDF GmbH
Launched—2023
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

AI Text Summarizer

The appeal is the absence of friction: paste or drop a file, choose a format and length, get a summary, ask a follow-up, close the tab. A 30 MB upload ceiling and 90-plus languages put it ahead of most free summarizers, and unlike them it does not stop after one go. The trade-off is that nothing persists — no account means no history, no library, no way back to yesterday's summary.

Pros

  • No account, email or card required, and no paywall after the first result
  • Accepts PDF, DOCX, TXT, PPTX, EPUB and FB2 up to 30 MB
  • Paragraph or bullet output at three length settings, plus follow-up questions
  • Named operator with a jurisdiction — LTS Inc., Nicosia, Cyprus — which most free tools skip

Cons

  • Nothing is saved between sessions
  • No API, no batch mode and no integrations
  • Free with no stated funding model, so longevity is unclear

ChatPDF

The quickest way to interrogate one long PDF without building retrieval yourself, and the page-level citations are what keep it honest. But ChatGPT and Claude now read PDFs natively, so ChatPDF only earns its subscription if you need those citations, the multi-file view, or the API.

Pros

  • answers cite specific pages, so you can check them instead of trusting them
  • handles Word, PowerPoint, Markdown and text files, not only PDF
  • REST API supports streaming and multi-turn conversations
  • free tier works with no account and no card

Cons

  • two documents a day on free runs out fast during real research
  • Plus pricing is not published anywhere on the site
  • no team plan, SSO or shared document library
  • hard per-file limit of 2,000 pages or 32 MB

Which one fits

Choose AI Text Summarizer if you need

  • One-off summaries of a long PDF or article without signing up
  • Reading a document in a language you do not work in
  • Pulling bullet points out of a report before a meeting

Choose ChatPDF if you need

  • students and researchers pulling verifiable quotes out of long papers
  • checking claims inside a contract or report you did not write
  • developers wanting a hosted PDF-Q&A endpoint instead of rolling their own RAG stack

More comparisons

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